Skip to content
🥬 Vegetable medium

Growing Rhubarb in Phnom Penh

🇰🇭 Zone 13 Planting Guide · Tropical savanna climate

USDA Zone 13 365 frost-free days 365-730 days to harvest

Quick Answer: Growing Rhubarb in Phnom Penh

Yes, you can grow Rhubarb in Phnom Penh, KH! Plant during Nov, Dec, Jan, Feb for best results. Phnom Penh is in USDA Zone 13 with a Tropical savanna climate, offering 365 frost-free days per year. The difficulty level is medium, and Rhubarb takes 365-730 days to harvest. Rhubarb needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Phnom Penh + Rhubarb

Phnom Penh's climate requires careful timing. Summer highs (35°C) exceed Rhubarb's maximum (25°C), so plant early or provide shade. Follow the recommended planting months for success.

Rhubarb tolerates -20°C to 25°C
Optimal: 10°C - 20°C
Phnom Penh range 22°C to 35°C

Phnom Penh Climate Data

USDA Zone
13
Frost-Free
365days
Winter Low
22°C
Summer High
35°C
Rainfall
1389mm/yr
Climate
Aw
Tropical savanna

Rhubarb Planting Calendar for Phnom Penh

Green months show the best time to plant Rhubarb in Phnom Penh

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Rhubarb Not recommended

Rhubarb Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

365-730

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Rhubarb

Don't harvest first year. Only eat stalks -- leaves are poisonous. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Rhubarb is frost tolerant — you can plant earlier in spring.

How to Grow Rhubarb in Phnom Penh

Phnom Penh, KH is in USDA Hardiness Zone 13 with a Tropical savanna climate (Köppen Aw). With winter lows of 22°C and summer highs of 35°C, the growing season spans approximately 365 frost-free days. Rhubarb grows well with some gardening knowledge in this climate.

Rhubarb thrives in temperatures between 10°C and 20°C, requiring full sun to partial shade and regular watering. In Phnom Penh, the best months to plant Rhubarb are November, December, January, February. Since Rhubarb can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 365-730 days after planting.

Phnom Penh receives 1389mm of annual rainfall, which provides good natural moisture for Rhubarb. Supplement with additional watering during dry spells.

Other Plants That Grow in Phnom Penh

More plants you can grow alongside Rhubarb in Phnom Penh

Keep Exploring

Frequently Asked Questions

Can I grow rhubarb in Phnom Penh?

Yes! Rhubarb can be successfully grown in Phnom Penh, KH. Phnom Penh is in USDA Hardiness Zone 13 with a Tropical savanna climate. The difficulty level for growing Rhubarb here is rated "medium". The best months to plant are November, December, January, February.

When should I plant rhubarb in Phnom Penh?

In Phnom Penh, the recommended planting months for Rhubarb are November, December, January, February. Phnom Penh has 365 frost-free days per year, with winter lows of 22°C and summer highs of 35°C. Rhubarb is frost tolerant, giving you more flexibility with planting dates.

How long does rhubarb take to grow in Phnom Penh?

Rhubarb typically takes 365-730 days from planting to harvest. In Phnom Penh's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Rhubarb to maturity. Don't harvest first year. Only eat stalks -- leaves are poisonous. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow rhubarb indoors in Phnom Penh?

Rhubarb can potentially be grown indoors in Phnom Penh with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Nov, Dec, Jan, Feb outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant rhubarb in Phnom Penh?

Plant Rhubarb in Phnom Penh during November, December, January, February. These are the optimal months based on Phnom Penh's USDA Zone 13 climate, 365 frost-free days, and temperature range of 22°C to 35°C.

Is rhubarb hard to grow in Phnom Penh?

Rhubarb is rated "medium" to grow in Phnom Penh. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Rhubarb in Phnom Penh is Moderate.

What grows well with rhubarb in Phnom Penh?

In Phnom Penh, you can grow many companion plants alongside Rhubarb. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Phnom Penh's Zone 13 climate.

Does rhubarb need full sun in Phnom Penh?

Rhubarb requires full sun to partial shade. Rhubarb tolerates lower light. In Phnom Penh, a spot with filtered or indirect light for 2-4 hours works well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

See an error? Report it